Fluted diamond drill

Details Fluted diamond drill Fluted diamond drill

1977-01-21

1978-04-11

Whitehead, Harold D.

Stone working

Precious stone working

51206P, 408145, B28D 500

Patent

active

040833518

ABSTRACT:
A drill for use in drilling precious and semi-precious stones consisting of a body adapted to be rotated on its axis, said body having longitudinal cutter elements separated by longitudinal flutes, the surfaces of the body of said drill being covered by an abrasive layer consisting of a ductile metal, such as nickel, containing a multiplicity of abrasive particles.

REFERENCES:
patent: 2467596 (1949-04-01), Pratt
patent: 3243924 (1966-04-01), Peters
patent: 3382743 (1968-05-01), Trevathan
patent: 3494348 (1970-02-01), Lindblad
patent: 3495359 (1970-02-01), Smith

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